Overtopping performance of different armour units for rubble mound breakwaters

Tom Bruce; J. W.  van der Meer; L. Franco; J.  Pearson

doi:10.1016/j.coastaleng.2008.03.015

Overtopping performance of different armour units for rubble mound breakwaters

Tom Bruce, J. W. van der Meer, L. Franco, J. Pearson

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This paper describes a major programme of small-scale physical model tests to establish better the influence of armour type and configuration on overtopping. Specifically, 179 tests determined the relative difference in overtopping behaviour for 13 types/configurations of armour. Roughness factors γf were determined for rock (two layers), cubes (single layer and two layers), Tetrapod, Antifer, Haro, Accropode, Core-Loc™ and Xbloc™. These roughness influence factors have been included in the CLASH database and are for use in the neural network prediction of overtopping. Individual wave-by-wave overtopping volumes were analysed and found to compare well with current prediction methods. Measured reflection coefficients for the different units are also presented and compared with recent formulae.

Original language	English
Pages (from-to)	166-179
Number of pages	14
Journal	Coastal Engineering
Volume	56
Issue number	2
DOIs	https://doi.org/10.1016/j.coastaleng.2008.03.015
Publication status	Published - Feb 2009

Keywords / Materials (for Non-textual outputs)

Rubble mound breakwaters
Overtopping
Armour blocks
Wave reflection
Armour roughness
Overtopping volumes
Mean overtopping discharge

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10.1016/j.coastaleng.2008.03.015

http://www.sciencedirect.com/science/article/pii/S0378383908000756

Cite this

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title = "Overtopping performance of different armour units for rubble mound breakwaters",

abstract = "This paper describes a major programme of small-scale physical model tests to establish better the influence of armour type and configuration on overtopping. Specifically, 179 tests determined the relative difference in overtopping behaviour for 13 types/configurations of armour. Roughness factors γf were determined for rock (two layers), cubes (single layer and two layers), Tetrapod, Antifer, Haro, Accropode, Core-Loc{\texttrademark} and Xbloc{\texttrademark}. These roughness influence factors have been included in the CLASH database and are for use in the neural network prediction of overtopping. Individual wave-by-wave overtopping volumes were analysed and found to compare well with current prediction methods. Measured reflection coefficients for the different units are also presented and compared with recent formulae.",

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AU - Franco, L.

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AB - This paper describes a major programme of small-scale physical model tests to establish better the influence of armour type and configuration on overtopping. Specifically, 179 tests determined the relative difference in overtopping behaviour for 13 types/configurations of armour. Roughness factors γf were determined for rock (two layers), cubes (single layer and two layers), Tetrapod, Antifer, Haro, Accropode, Core-Loc™ and Xbloc™. These roughness influence factors have been included in the CLASH database and are for use in the neural network prediction of overtopping. Individual wave-by-wave overtopping volumes were analysed and found to compare well with current prediction methods. Measured reflection coefficients for the different units are also presented and compared with recent formulae.

KW - Rubble mound breakwaters

KW - Overtopping

KW - Armour blocks

KW - Wave reflection

KW - Armour roughness

KW - Overtopping volumes

KW - Mean overtopping discharge

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DO - 10.1016/j.coastaleng.2008.03.015

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JO - Coastal Engineering

JF - Coastal Engineering

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ER -

Overtopping performance of different armour units for rubble mound breakwaters

Abstract

Keywords / Materials (for Non-textual outputs)

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